Important: Read this before posting to this forum
- This forum is for questions related to the use of Apollo. We will answer some general choice modelling questions too, where appropriate, and time permitting. We cannot answer questions about how to estimate choice models with other software packages.
- There is a very detailed manual for Apollo available at http://www.ApolloChoiceModelling.com/manual.html. This contains detailed descriptions of the various Apollo functions, and numerous examples are available at http://www.ApolloChoiceModelling.com/examples.html. In addition, help files are available for all functions, using e.g. ?apollo_mnl
- Before asking a question on the forum, users are kindly requested to follow these steps:
- Check that the same issue has not already been addressed in the forum - there is a search tool.
- Ensure that the correct syntax has been used. For any function, detailed instructions are available directly in Apollo, e.g. by using ?apollo_mnl for apollo_mnl
- Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
- Make sure that R is using the latest official release of Apollo.
- Users can check which version they are running by entering packageVersion("apollo").
- Then check what is the latest full release (not development version) at http://www.ApolloChoiceModelling.com/code.html.
- To update to the latest official version, just enter install.packages("apollo"). To update to a development version, download the appropriate binary file from http://www.ApolloChoiceModelling.com/code.html, and install the package from file
- If the above steps do not resolve the issue, then users should follow these steps when posting a question:
- provide full details on the issue, including the entire code and output, including any error messages
- posts will not immediately appear on the forum, but will be checked by a moderator first. This may take a day or two at busy times. There is no need to submit the post multiple times.
Errors during model validation and/or estimation.
-
- Topics
- Replies
- Views
- Last post
-
- 3 Replies
- 62 Views
-
Last post by stephanehess
-
- 11 Replies
- 11272 Views
-
Last post by stephanehess
-
- 12 Replies
- 15562 Views
-
Last post by stephanehess
-
- 5 Replies
- 227 Views
-
Last post by stephanehess
-
- 1 Replies
- 26 Views
-
Last post by stephanehess
-
- 8 Replies
- 5767 Views
-
Last post by dpalma
-
- 1 Replies
- 1247 Views
-
Last post by stephanehess
-
- 1 Replies
- 1137 Views
-
Last post by stephanehess
-
- 5 Replies
- 36647 Views
-
Last post by dpalma
-
- 1 Replies
- 27787 Views
-
Last post by stephanehess
-
- 1 Replies
- 7325 Views
-
Last post by stephanehess
-
- 2 Replies
- 7322 Views
-
Last post by lemontree
-
- 2 Replies
- 6782 Views
-
Last post by sykim
-
- 8 Replies
- 21432 Views
-
Last post by lxiaolei
-
- 11 Replies
- 118444 Views
-
Last post by stephanehess
-
- 7 Replies
- 7729 Views
-
Last post by zx9203
-
- 2 Replies
- 7313 Views
-
Last post by Pigouvian
-
- 5 Replies
- 6612 Views
-
Last post by stephanehess
-
- 5 Replies
- 6832 Views
-
Last post by stephanehess
-
- 13 Replies
- 29260 Views
-
Last post by stephanehess
-
- 1 Replies
- 4622 Views
-
Last post by stephanehess
-
- 1 Replies
- 2856 Views
-
Last post by stephanehess
-
- 2 Replies
- 14159 Views
-
Last post by janikm
-
- 11 Replies
- 6535 Views
-
Last post by qcng
-
- 9 Replies
- 58410 Views
-
Last post by dpalma